able

Having a strong healthy body.

“an able seaman”

“every able-bodied young man served in the army”

Have the skills and qualifications to do things well.

“able teachers”

“a capable administrator”

Having inherent physical or mental ability or capacity.

“able to learn”

“human beings are able to walk on two feet”

(usually followed by `to') having the necessary means or skill or know-how or authority to do something.

“able to swim”

“she was able to program her computer”